WO2015184694A1 - Direct current driving voltage regulation device and method, power supply device, and display panel - Google Patents

Direct current driving voltage regulation device and method, power supply device, and display panel Download PDF

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Publication number
WO2015184694A1
WO2015184694A1 PCT/CN2014/085864 CN2014085864W WO2015184694A1 WO 2015184694 A1 WO2015184694 A1 WO 2015184694A1 CN 2014085864 W CN2014085864 W CN 2014085864W WO 2015184694 A1 WO2015184694 A1 WO 2015184694A1
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WIPO (PCT)
Prior art keywords
voltage
current
lead
display area
driving voltage
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PCT/CN2014/085864
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French (fr)
Chinese (zh)
Inventor
张林涛
刘铭
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京东方科技集团股份有限公司
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Publication of WO2015184694A1 publication Critical patent/WO2015184694A1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Definitions

  • the luminance of the organic light emitting diode is exponentially related to the DC driving voltage of the effective display area of the display panel, and thus is low gray.
  • the change in the luminance of the OLED is very sensitive to the change of the DC drive voltage.
  • the AMOLED panel In order to make the organic material emit light, a large current is consumed, and the power driving capability of the driving chip is weak, and the corresponding current cannot be supplied, and an independent DC voltage generating unit is required.
  • the DC driving voltage is transmitted from the DC voltage generating unit to the effective display area through the leads disposed outside the effective display area of the display panel.
  • the current on the lead can be estimated by the current consumption of the display on the display panel, and the current on the lead can be considered as the sum of the pixel currents.
  • the current on the lead is (Ired+Igreen-Iblue)xMxN, where Ired, Igreen, and Iblue are the current of the red sub-pixel, the current of the green sub-pixel, and the current of the blue sub-pixel, respectively, M is effective
  • M is effective
  • N is the number of rows of scan lines in the effective display area. Since the OLED display is self-illuminating technology, when the display panel displays a black screen, the current on the lead is the smallest, which is close to 0; and when the display panel displays a full white screen, the current on the lead is the largest, which is hundreds of mA. Therefore, the current on the lead ranges from 0 mA to hundreds of mA.
  • the resistance of the lead of the DC voltage generating unit to the effective display area is usually several ohms, so that the DC voltage drop generated by the DC voltage generating unit and the DC driving voltage transmitted to the effective display area is 0 to several. Hundred millivolts, so the lead The DC voltage drop causes a change in the DC drive voltage, which affects the uniformity of the display.
  • a main object of the present disclosure is to provide a DC driving voltage adjusting apparatus and method for making a display panel have a uniform DC driving voltage, thereby making the display panel display uniform.
  • the present disclosure provides a DC driving voltage adjusting device for adjusting a DC driving voltage of an effective display area of a display panel, the DC driving voltage being subtracted from a DC voltage generated by a DC voltage generating unit.
  • the DC driving voltage adjusting device includes:
  • the current acquisition unit, ⁇ obtains the current on the lead in real time
  • a voltage adjusting unit configured to adjust a DC voltage generated by the DC voltage generating unit according to the current or adjust a resistance of the lead wire so that the DC driving voltage does not change.
  • the voltage adjustment unit includes:
  • a voltage adjustment module configured to generate a voltage control signal according to the current, and transmit the voltage control signal to the DC voltage generating unit to control the DC voltage generating unit to generate a corresponding DC voltage, so that the DC driving voltage is not change.
  • the voltage adjustment unit includes:
  • a resistance adjustment module configured to adjust a resistance value of the digital adjustable resistor according to the current.
  • the current acquisition unit includes a current sensor or a current inductive resistor disposed on the lead.
  • the current acquiring unit includes:
  • a pixel brightness detecting module configured to detect brightness of all sub-pixels in the effective display area
  • a current acquiring module configured to obtain current on the lead according to brightness of all sub-pixels in the effective display area.
  • the current acquiring unit includes:
  • a temperature detecting module wherein the temperature of the display panel is detected
  • the current acquisition module, ⁇ obtains the current on the lead according to the temperature of the display panel.
  • the present disclosure also provides a DC driving voltage adjustment method for adjusting a DC driving voltage of an effective display area of a display panel, wherein the DC driving voltage is subtracted from a DC voltage generated by a DC voltage generating unit. The DC voltage drop on the lead wire outside the effective display area is obtained, and the DC driving voltage adjusting method includes:
  • Voltage adjustment step adjusting a DC voltage generated by the DC voltage generating unit according to the current or adjusting a resistance on the lead such that the DC driving voltage does not change.
  • the voltage adjusting step includes:
  • the voltage control signal is transmitted to the DC voltage generating unit, and the DC voltage generating unit is controlled to generate a corresponding DC voltage so that the DC driving voltage does not change.
  • the voltage adjusting step includes:
  • the resistance value of the digitally adjustable resistor disposed on the lead is adjusted correspondingly according to the current so that the DC driving voltage does not change.
  • the current obtaining step includes:
  • the current on the lead is obtained based on the brightness of all sub-pixels in the active display area.
  • the current obtaining step includes:
  • the current on the lead is obtained based on the temperature of the display panel.
  • the present disclosure also provides a power supply device including a DC voltage generating unit and the DC driving voltage adjusting device described above;
  • the DC voltage generating unit generates a DC voltage, and transmits the DC voltage to an effective display area through a lead disposed outside the effective display area of the display panel;
  • the DC voltage is subtracted from the DC voltage drop across the lead to the DC drive voltage of the active display area.
  • the present disclosure also provides a display panel including the above-described power supply device.
  • the DC driving voltage adjusting device and method, the power supply device and the display panel of the present disclosure obtain the current on the lead wire for transmitting the DC driving voltage outside the effective display area in real time, and adjust the current according to the magnitude of the current.
  • Describe the DC voltage generated by the DC voltage generating unit or adjust the The resistance on the lead wire is such that the DC driving voltage reaching the effective display area does not change regardless of what is displayed on the display panel, so that the effective display area has a uniform DC driving voltage, thereby making the display panel display uniform.
  • FIG. 1 is a schematic structural diagram of a DC driving voltage adjusting device according to an embodiment of the present disclosure
  • FIG. 2A is a schematic structural diagram of a DC driving voltage adjusting device according to still another embodiment of the present disclosure
  • FIG. 2B is still another embodiment of the present disclosure
  • FIG. 3 is a flowchart of a DC driving voltage adjusting method according to an embodiment of the present disclosure.
  • the DC driving voltage for driving the OLED in the effective display area of the display panel is transmitted from the DC voltage generating unit to the effective display area through the lead disposed outside the effective display area; the DC voltage generating unit generates a DC voltage, and the The DC voltage is transmitted to the effective display area through a lead disposed outside the effective display area of the display panel; the DC voltage minus the DC voltage drop on the lead is the DC drive voltage of the effective display area; since the current on the lead is based on The content displayed on the display panel changes in real time. Therefore, under the premise that the resistance of the lead is constant, the voltage drop on the lead is also changed in real time, which inevitably causes the DC driving voltage of the effective display area to also change accordingly.
  • the display panel is not evenly displayed.
  • the DC driving voltage adjusting device includes:
  • a current acquisition unit that acquires current on the lead in real time
  • a voltage adjusting unit configured to adjust a DC voltage generated by the DC voltage generating unit according to the current or adjust a resistance on the lead to make the DC driving voltage unchanged.
  • the present disclosure acquires a current on a lead wire transmitting a direct current driving voltage outside the effective display area in real time, adjusts a direct current voltage generated by the direct current voltage generating unit according to the magnitude of the current, or adjusts a resistance on the lead wire so that the display panel What is displayed, the DC drive voltage reaching the effective display area is unchanged, so that the effective display area has a uniform DC drive voltage, thereby making the display panel display uniform.
  • the voltage adjustment unit may include:
  • a voltage regulating module configured to generate a voltage control signal according to the current, and transmit the voltage control signal to a DC voltage generating unit to control the DC voltage generating unit to generate a corresponding DC voltage, thereby causing a DC driving to be transmitted to the effective display area
  • the voltage does not change.
  • a driving integrated circuit and a flexible circuit board are disposed on the periphery of the effective display area, the DC voltage generating unit adopts a DC/DC (Direct Current) converter, and the current acquiring unit uses a current sensor to mark The resistance of R is the resistance of the lead;
  • DC/DC Direct Current
  • the current sensor transmits the detected current I on the lead to the voltage regulating module, and the voltage adjusting module determines whether the DC voltage VDD outputted by the DC/DC converter needs to be adjusted according to the magnitude of the current I, so that The DC drive voltage VDDA is unchanged;
  • VDD-VDDR-fVDDA where VDDR is the voltage drop across the lead.
  • VDDR is the voltage drop across the lead.
  • the voltage adjustment unit may include: a digital adjustable resistor VR disposed on a lead between the DC voltage generating unit 10 and the effective display area AA';
  • a resistance adjusting module 122 configured to adjust a resistance value of the digital adjustable resistor VR according to the current, so that a DC driving voltage transmitted to the effective display area is unchanged;
  • the resistance labeled R is the resistance on the lead.
  • a driving integrated circuit and a flexible circuit board are disposed on the periphery of the effective display area, the DC voltage generating unit adopts a DC/DC (Direct Current-DC) converter, and the current acquiring unit uses a current sensor.
  • the resistance indicated as R is the resistance of the lead
  • the resistance indicated as VR is the digital adjustable resistance set on the lead
  • the voltage indicated as VDD is the DC voltage generated by the DC/DC converter
  • the current sensor transmits the current I on the detected lead to the resistance adjustment module, and the resistance adjustment module adjusts the resistance value of the digital adjustable resistor VR according to the current, And the DC driving voltage VDDA transmitted to the effective display area is unchanged;
  • VDD-VDDR+VDDA where VDDR is the voltage drop across the lead.
  • the current on the lead can be obtained by directly detecting the current on the lead, or indirectly by the brightness of the sub-pixel in the effective display area of the display panel or the temperature of the display panel.
  • the current acquisition unit may include a current sensor or a current sense resistor disposed on the lead.
  • the current acquisition unit may include:
  • a pixel brightness detecting module configured to detect brightness of all sub-pixels in the effective display area
  • a current acquiring module configured to obtain current on the lead according to brightness of all sub-pixels in the effective display area.
  • the current acquisition unit may further include:
  • a temperature detecting module wherein the temperature of the display panel is detected
  • a current acquisition module for obtaining a current on the lead according to a temperature of the display panel.
  • the current content of the effective display area of the display panel can be determined, and the signals transmitted by the image are digital signals, and the data constituting one pixel includes 8 components of R, G, and B of 8 bits.
  • the data constituting one pixel includes 8 components of R, G, and B of 8 bits.
  • “11111111” represents the highest brightness
  • "00000000” represents the lowest brightness
  • the middle data represents the different gray levels from 0 to 255.
  • the current required to display the image also has a corresponding relationship with the brightness of the pixel. When the pixel brightness is high, the current required to display the image is large, and when the pixel brightness is low, the current required to display the image is small, so the display on the effective display area can be counted.
  • the content of the image if there are many pixels with high brightness in the image, it is inevitable that the current required for display is large, and if there are many pixels with low brightness, the current required for display is small. Since the time and cost of accurate statistics are too large, an estimation method can be used, such as counting the number of pixels whose luminance is higher than 127 gray scale, that is, the data is larger than "10000000", and indirectly obtaining the lead according to the number of statistics. Current.
  • the pixels in the effective display area of the display panel emit light, a certain amount of heat is generated, and the amount of heat generated is proportional to the pixel consumption current. If the temperature of the panel can be monitored, it can also be accurate. Determine the current consumed by the panel. Therefore, one or more temperature sensors can be placed near the panel, and the magnitude of the current consumption of the display panel (ie, the current on the lead wire) is obtained according to the temperature measured by the sensors, and the current is fed back to the external DC voltage generating unit. To adjust the DC drive voltage.
  • the DC driving voltage adjusting method is applied to the voltage adjusting device, wherein the DC driving voltage is transmitted from the DC voltage generating unit to the effective display area through a lead disposed outside the effective display area;
  • the DC driving voltage adjustment method includes:
  • the current acquisition unit acquires the current on the lead in real time
  • Voltage adjustment step 32 The voltage adjustment unit adjusts the DC voltage generated by the DC voltage generating unit according to the current or adjusts the electric power ffi on the lead wire so that the DC driving voltage does not change.
  • the voltage adjustment step includes:
  • the voltage regulation module generates a voltage control signal according to the current
  • the DC voltage generating unit generates a corresponding DC voltage according to the voltage control signal such that the DC driving voltage does not change.
  • the voltage adjustment step includes:
  • the resistance adjusting module adjusts the resistance value of the digital adjustable resistor disposed on the lead according to the current, so that the DC driving voltage does not change.
  • the current obtaining step includes:
  • the pixel brightness detection module detects the brightness of all the sub-pixels in the effective display area; the current acquisition module obtains the current on the lead according to the brightness of all the sub-pixels in the effective display area.
  • the current obtaining step includes:
  • a temperature detecting module detects a temperature of the display panel
  • the current acquisition module obtains the current on the lead according to the temperature of the display panel.
  • the power supply device includes a DC voltage generating unit and the DC driving voltage adjusting device described above;
  • the DC voltage generating unit is configured to generate a DC voltage, and transmit the DC voltage to an effective display area through a lead disposed outside the effective display area of the display panel;
  • the DC voltage is subtracted from the DC voltage drop on the lead to the DC drive voltage of the effective display area;
  • the DC driving voltage adjusting device is configured to obtain a current on the lead in real time, and adjust the DC voltage according to the current or adjust a resistance of the lead so that the DC driving voltage does not change.
  • the display panel of the embodiment of the present disclosure includes the above-described power supply device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

A direct current driving voltage regulation device and method, a power supply device, and a display panel. A direct current driving voltage is transmitted to an effective display area by a direct current voltage generating unit 10 through a lead that is disposed outside the effective display area of the display panel. The direct current driving voltage regulation device comprises a current acquiring unit for acquiring the current on the lead in real time, and a voltage regulating unit for regulating a direct current voltage generated by the direct current voltage generating unit 10 or regulating the resistance of the lead according to the current in order to keep the direct current driving voltage unchanged. The effective display area is provided with a unified direct current driving voltage, and thus the display uniformity of the display panel is ensured.

Description

本申请主张在 2014 年 6 月 4 日在中国提交的中国专利申请号 No 201410244887.9的优先权， 其全部内容通过引用包含于此。  Priority is claimed on Chinese Patent Application No. 20140244887.9, filed on Jun. 4, 2014, in
Figure imgf000003_0001
Figure imgf000003_0001
在 AMOLED (Active Matrix/Organic Light Emitting Diode, 有源矩 有机 发光二极管）显示面板中， 有机发光二极管（OLED) 的发光亮度与显示面板 的有效显示区的直流驱动电压成指数关系， 因此在低灰度显示的状态下， OLED的发光亮度的变化对于该直流驱动电压的变化十分敏感。 In an AMOLED (Active Matrix/Organic Light Emitting Diode) display panel, the luminance of the organic light emitting diode (OLED) is exponentially related to the DC driving voltage of the effective display area of the display panel, and thus is low gray. In the state of degree display, the change in the luminance of the OLED is very sensitive to the change of the DC drive voltage.
在 AMOLED面板中， 为使有机材料发光， 需要消耗较大电流， 而驱动 芯片的电源驱动能力较弱， 无法提供相应的电流， 需要外加独立的直流电压 产生单元。 在 AMOLED显示面板内， 直流驱动电压是由直流电压产生单元 通过设置于显示面板的有效显示区外的引线传送至有效显示区的。 该引线上 的电流可以通过显示面板上的显示画面的电流消耗进行估算， 可以将引线上 的电流视为像素电流的总和。 在显示面板内部， 该引线上的电流为 (Ired+Igreen- Iblue)xMxN， 其中 Ired、 Igreen和 Iblue分别为红色子像素的电 流、 绿色子像素的电流和蓝色子像素的电流， M为有效显示区内数据线的列 数， N为有效显示区内扫描线的行数。 由于 OLED显示为自发光技术， 所以 显示面板显示全黑画面时， 该引线上的电流最小， 接近于 0; 而当显示面板 显示全白画面时， 该引线上的电流最大， 为上百 mA， 因此该引线上的电流 的范围为 0mA至上百 mA。 而直流电压产生单元到有效显示区的引线的电阻 通常有几个欧姆， 这样直流电压产生单元产生的直流电压与传送至有效显示 区内的直流驱动电压之间的直流电压降范围是 0〜几百毫伏， 因此该引线上 的直流电压降会引起直流驱动电压的变化， 从而影响显示的均匀性。 In the AMOLED panel, in order to make the organic material emit light, a large current is consumed, and the power driving capability of the driving chip is weak, and the corresponding current cannot be supplied, and an independent DC voltage generating unit is required. In the AMOLED display panel, the DC driving voltage is transmitted from the DC voltage generating unit to the effective display area through the leads disposed outside the effective display area of the display panel. The current on the lead can be estimated by the current consumption of the display on the display panel, and the current on the lead can be considered as the sum of the pixel currents. Inside the display panel, the current on the lead is (Ired+Igreen-Iblue)xMxN, where Ired, Igreen, and Iblue are the current of the red sub-pixel, the current of the green sub-pixel, and the current of the blue sub-pixel, respectively, M is effective The number of columns of data lines in the display area, N is the number of rows of scan lines in the effective display area. Since the OLED display is self-illuminating technology, when the display panel displays a black screen, the current on the lead is the smallest, which is close to 0; and when the display panel displays a full white screen, the current on the lead is the largest, which is hundreds of mA. Therefore, the current on the lead ranges from 0 mA to hundreds of mA. The resistance of the lead of the DC voltage generating unit to the effective display area is usually several ohms, so that the DC voltage drop generated by the DC voltage generating unit and the DC driving voltage transmitted to the effective display area is 0 to several. Hundred millivolts, so the lead The DC voltage drop causes a change in the DC drive voltage, which affects the uniformity of the display.
本公开的主要目的在于提供一种直流驱动电压调节装置和方法， 使有效 显示区具有统一的直流驱动电压， 从而使得显示面板显示均匀。 A main object of the present disclosure is to provide a DC driving voltage adjusting apparatus and method for making a display panel have a uniform DC driving voltage, thereby making the display panel display uniform.
为了达到上述目的， 本公开提供了一种直流驱动电压调节装置， ffi于调 节显示面板的有效显示区的直流驱动电压， 该直流驱动电压通过从直流电压 产生单元所产生的直流电压中减去设置于所述有效显示区外的引线上的直流 电压降而得到， 所述直流驱动电压调节装置包括：  In order to achieve the above object, the present disclosure provides a DC driving voltage adjusting device for adjusting a DC driving voltage of an effective display area of a display panel, the DC driving voltage being subtracted from a DC voltage generated by a DC voltage generating unit. Obtaining a DC voltage drop on the lead wire outside the effective display area, the DC driving voltage adjusting device includes:
电流获取单元， ^于实时获取该引线上的电流；  The current acquisition unit, ^ obtains the current on the lead in real time;
电压调节单元， 用于根据该电流调节所述直流电压产生单元产生的直流 电压或调节该引线的电阻， 以使得该直流驱动电压不变。  And a voltage adjusting unit, configured to adjust a DC voltage generated by the DC voltage generating unit according to the current or adjust a resistance of the lead wire so that the DC driving voltage does not change.
可选的， 所述电压调节单元包括：  Optionally, the voltage adjustment unit includes:
电压调节模块， 用于根据该电流产生电压控制信号， 并将该电压控制信 号传送至所述直流电压产生单元， 以控制该直流电压产生单元产生相应的直 流电压， 从而使得所述直流驱动电压不变。  a voltage adjustment module, configured to generate a voltage control signal according to the current, and transmit the voltage control signal to the DC voltage generating unit to control the DC voltage generating unit to generate a corresponding DC voltage, so that the DC driving voltage is not change.
可选的， 所述电压调节单元包括：  Optionally, the voltage adjustment unit includes:
设置于该引线上的数字可调电阻；  a digital adjustable resistor disposed on the lead;
以及， 电阻调节模块， 用于根据该电流相应调节该数字可调电阻的电阻 值。  And a resistance adjustment module, configured to adjust a resistance value of the digital adjustable resistor according to the current.
可选的， 所述电流获取单元包括电流传感器或设置于该引线上的电流感 应电阻。  Optionally, the current acquisition unit includes a current sensor or a current inductive resistor disposed on the lead.
可选的， 所述电流获取单元包括：  Optionally, the current acquiring unit includes:
像素亮度检测模块， 用于检测所述有效显示区内的所有亚像素的亮度； 电流获取模块， 用于根据该有效显示区内的所有亚像素的亮度得到所述 引线上的电流。  a pixel brightness detecting module, configured to detect brightness of all sub-pixels in the effective display area; and a current acquiring module configured to obtain current on the lead according to brightness of all sub-pixels in the effective display area.
可选的， 所述电流获取单元包括：  Optionally, the current acquiring unit includes:
温度检测模块， ）¾于检测所述显示面板的温度；  a temperature detecting module, wherein the temperature of the display panel is detected;
电流获取模块， ^于根据该显示面板的温度得到该引线上的电流。 本公开还提供了一种直流驱动电压调节方法， 用于调节显示面板的有效 显示区的直流驱动电压， 所述直流驱动电压通过从直流电压产生单元所产生 的直流电压中减去设置于所述有效显示区外的引线上的直流电压降而得到， 所述直流驱动电压调节方法包括： The current acquisition module, ^ obtains the current on the lead according to the temperature of the display panel. The present disclosure also provides a DC driving voltage adjustment method for adjusting a DC driving voltage of an effective display area of a display panel, wherein the DC driving voltage is subtracted from a DC voltage generated by a DC voltage generating unit. The DC voltage drop on the lead wire outside the effective display area is obtained, and the DC driving voltage adjusting method includes:
电流获取步骤： 实时获取该引线上的电流；  Current acquisition step: obtaining current on the lead in real time;
电压调节步骤： 根据该电流调节所述直流电压产生单元产生的直流电压 或调节该引线上的电阻， 以使得该直流驱动电压不变。  Voltage adjustment step: adjusting a DC voltage generated by the DC voltage generating unit according to the current or adjusting a resistance on the lead such that the DC driving voltage does not change.
可选的， 所述电压调节步骤包括：  Optionally, the voltage adjusting step includes:
根据该电流产生电压控制信号；  Generating a voltage control signal based on the current;
将该电压控制信号传送至所述直流电压产生单元， 控制该直流电压产生 单元产生相应的直流电压， 以使得所述直流驱动电压不变。  The voltage control signal is transmitted to the DC voltage generating unit, and the DC voltage generating unit is controlled to generate a corresponding DC voltage so that the DC driving voltage does not change.
可选的， 所述电压调节步骤包括：  Optionally, the voltage adjusting step includes:
根据该电流相应调节设置于该引线上的数字可调电阻的电阻值， 以使得 所述直流驱动电压不变。  The resistance value of the digitally adjustable resistor disposed on the lead is adjusted correspondingly according to the current so that the DC driving voltage does not change.
可选的， 所述电流获取步骤包括：  Optionally, the current obtaining step includes:
检测所述有效显示区内的所有亚像素的亮度；  Detecting brightness of all sub-pixels in the effective display area;
根据该有效显示区内的所有亚像素的亮度得到所述引线上的电流。  The current on the lead is obtained based on the brightness of all sub-pixels in the active display area.
可选的， 所述电流获取步骤包括：  Optionally, the current obtaining step includes:
检测所述显示面板的温度；  Detecting a temperature of the display panel;
根据该显示面板的温度得到该引线上的电流。  The current on the lead is obtained based on the temperature of the display panel.
本公开还提供了一种供电装置， 包括直流电压产生单元和上述的直流驱 动电压调节装置；  The present disclosure also provides a power supply device including a DC voltage generating unit and the DC driving voltage adjusting device described above;
所述直流电压产生单元产生直流电压， 并将该直流电压通过设置于显示 面板的有效显示区外的引线传送至有效显示区；  The DC voltage generating unit generates a DC voltage, and transmits the DC voltage to an effective display area through a lead disposed outside the effective display area of the display panel;
该直流电压减去该引线上的直流电压降为有效显示区的直流驱动电压。 本公开还提供了一种显示面板， 包括上述的供电装置。  The DC voltage is subtracted from the DC voltage drop across the lead to the DC drive voltage of the active display area. The present disclosure also provides a display panel including the above-described power supply device.
与现有技术相比， 本公开的直流驱动电压调节装置及方法、 供电装置和 显示面板通过实时获取有效显示区外的用于传送直流驱动电压的引线上的电 流， 根据该电流的大小调节所述直流电压产生单元产生的直流电压或调节该 引线上的电阻， 以使得不论显示面板显示什么内容， 到达有效显示区的直流 驱动电压不变， 丛而使有效显示区具有统一的直流驱动电压， 从而使得显示 面板显示均匀。 Compared with the prior art, the DC driving voltage adjusting device and method, the power supply device and the display panel of the present disclosure obtain the current on the lead wire for transmitting the DC driving voltage outside the effective display area in real time, and adjust the current according to the magnitude of the current. Describe the DC voltage generated by the DC voltage generating unit or adjust the The resistance on the lead wire is such that the DC driving voltage reaching the effective display area does not change regardless of what is displayed on the display panel, so that the effective display area has a uniform DC driving voltage, thereby making the display panel display uniform.
图 1是本公开一实施例所述的直流驱动电压调节装置的结构示意图； 图 2A是本公开再一实施例所述的直流驱动电压调节装置的结构示意图； 图 2B是本公开又一实施例所述的直流驱动电压调节装置的具体结构图； 图 3是本公开实施例所述的直流驱动电压调节方法的流程图。 1 is a schematic structural diagram of a DC driving voltage adjusting device according to an embodiment of the present disclosure; FIG. 2A is a schematic structural diagram of a DC driving voltage adjusting device according to still another embodiment of the present disclosure; FIG. 2B is still another embodiment of the present disclosure; A specific structural diagram of the DC driving voltage adjusting device; FIG. 3 is a flowchart of a DC driving voltage adjusting method according to an embodiment of the present disclosure.
^于在显示面板的有效显示区驱动 OLED的直流驱动电压是由直流电压 产生单元通过设置于有效显示区外的引线传送至有效显示区的； 所述直流电 压产生单元产生直流电压， 并将该直流电压通过设置于显示面板的有效显示 区外的引线传送至有效显示区； 该直流电压减去该引线上的直流电压降即为 有效显示区的直流驱动电压； 由于该引线上的电流是根据显示面板显示的内 容实时变化的， 因此在该引线的电阻不变的前提下， 该引线上的电压降也是 实时变化的， 这必然会引起有效显示区的直流驱动电压也相应变化， 丛而导 致显示面板显示不均匀。 The DC driving voltage for driving the OLED in the effective display area of the display panel is transmitted from the DC voltage generating unit to the effective display area through the lead disposed outside the effective display area; the DC voltage generating unit generates a DC voltage, and the The DC voltage is transmitted to the effective display area through a lead disposed outside the effective display area of the display panel; the DC voltage minus the DC voltage drop on the lead is the DC drive voltage of the effective display area; since the current on the lead is based on The content displayed on the display panel changes in real time. Therefore, under the premise that the resistance of the lead is constant, the voltage drop on the lead is also changed in real time, which inevitably causes the DC driving voltage of the effective display area to also change accordingly. The display panel is not evenly displayed.
基于此， 本公开实施例所述的直流驱动电压调节装置包括：  Based on this, the DC driving voltage adjusting device according to the embodiment of the present disclosure includes:
电流获取单元， 于实时获取该引线上的电流；  a current acquisition unit that acquires current on the lead in real time;
电压调节单元， 用于根据该电流调节所述直流电压产生单元产生的直流 电压或调节该引线上的电阻， 以使得该直流驱动电压不变。  And a voltage adjusting unit, configured to adjust a DC voltage generated by the DC voltage generating unit according to the current or adjust a resistance on the lead to make the DC driving voltage unchanged.
本公开通过实时获取有效显示区外的 于传送直流驱动电压的引线上的 电流， 根据该电流的大小调节所述直流电压产生单元产生的直流电压或调节 该引线上的电阻， 以使得不论显示面板显示什么内容， 到达有效显示区的直 流驱动电压不变， 从而使有效显示区具有统一的直流驱动电压， 从而使得显 示面板显示均匀。  The present disclosure acquires a current on a lead wire transmitting a direct current driving voltage outside the effective display area in real time, adjusts a direct current voltage generated by the direct current voltage generating unit according to the magnitude of the current, or adjusts a resistance on the lead wire so that the display panel What is displayed, the DC drive voltage reaching the effective display area is unchanged, so that the effective display area has a uniform DC drive voltage, thereby making the display panel display uniform.
在实际操作时， 可以根据引线上的电流确定是否需对直流驱动电压进行 调节， 调节的方式有两种： 通过对直流电压产生单元产生的直流电压进行调 节， 或通过调整引线上的电阻来对直流驱动电压进行调节。 In actual operation, it can be determined according to the current on the lead wire whether the DC drive voltage needs to be performed. There are two ways to adjust and adjust: Adjust the DC drive voltage by adjusting the DC voltage generated by the DC voltage generating unit, or by adjusting the resistance on the lead.
根据一种具体实施方式， 所述电压调节单元可以包括：  According to a specific embodiment, the voltage adjustment unit may include:
电压调节模块， 用于根据该电流产生电压控制信号， 并将该电压控制信 号传送至直流电压产生单元， 以控制该直流电压产生单元产生相应的直流电 压， 从而使得传送至有效显示区的直流驱动电压不变。  a voltage regulating module, configured to generate a voltage control signal according to the current, and transmit the voltage control signal to a DC voltage generating unit to control the DC voltage generating unit to generate a corresponding DC voltage, thereby causing a DC driving to be transmitted to the effective display area The voltage does not change.
具体的， 如图 1所示， 有效显示区***设置有驱动集成电路和柔性电路 板， 所述直流电压产生单元采用 DC/DC (直流直流）变换器， 所述电流获取 单元采用电流传感器， 标示为 R的电阻为引线的电阻；  Specifically, as shown in FIG. 1 , a driving integrated circuit and a flexible circuit board are disposed on the periphery of the effective display area, the DC voltage generating unit adopts a DC/DC (Direct Current) converter, and the current acquiring unit uses a current sensor to mark The resistance of R is the resistance of the lead;
在实际操作时， 电流传感器将检测到的引线上的电流 I传送至电压调节 模块， 电压调节模块根据该电流 I的大小确定是否需对 DC/DC变换器输出的 直流电压 VDD进行调节， 以使得直流驱动电压 VDDA不变；  In actual operation, the current sensor transmits the detected current I on the lead to the voltage regulating module, and the voltage adjusting module determines whether the DC voltage VDD outputted by the DC/DC converter needs to be adjusted according to the magnitude of the current I, so that The DC drive voltage VDDA is unchanged;
VDD-VDDR-fVDDA, 其中， VDDR为该引线上的电压降， 当引线上的 电流 I的电流值由 10变为 Ι0+ΔΙ时， 引线上的电压降由 IOXR变为 （ICH ΔΙ) xR， 则此时需要将直流电压 VDD调节为 VDD+AlxR, 这样才能保证 VDDA 不变。  VDD-VDDR-fVDDA, where VDDR is the voltage drop across the lead. When the current value of current I on the lead changes from 10 to Ι0+ΔΙ, the voltage drop across the lead changes from IOXR to (ICH ΔΙ) xR, Then, the DC voltage VDD needs to be adjusted to VDD+AlxR to ensure that VDDA does not change.
根据一种具体实施方式， 如图 2A所示， 所述电压调节单元可以包括： 设置于直流电压产生单元 10与有效显示区 AA'之间的引线上的数字可调 电阻 VR;  According to a specific embodiment, as shown in FIG. 2A, the voltage adjustment unit may include: a digital adjustable resistor VR disposed on a lead between the DC voltage generating unit 10 and the effective display area AA';
以及， 电阻调节模块 122， 用于根据该电流相应调节该数字可调电阻 VR 的电阻值， 从而使得传送至有效显示区的直流驱动电压不变；  And a resistance adjusting module 122, configured to adjust a resistance value of the digital adjustable resistor VR according to the current, so that a DC driving voltage transmitted to the effective display area is unchanged;
在图 2A中， 标示为 R的电阻是该引线上的电阻。  In Figure 2A, the resistance labeled R is the resistance on the lead.
具体的，如图 2B所示，有效显示区***设置有驱动集成电路和柔性电路 板， 所述直流电压产生单元采用 DC/DC (直流-直流）变换器， 所述电流获取 单元采用电流传感器， 标示为 R的电阻为引线的电阻， 标示为 VR的电阻为 设置于引线上的数字可调电阻， 标示为 VDD的电压为 DC/DC变换器产生的 直流电压；  Specifically, as shown in FIG. 2B, a driving integrated circuit and a flexible circuit board are disposed on the periphery of the effective display area, the DC voltage generating unit adopts a DC/DC (Direct Current-DC) converter, and the current acquiring unit uses a current sensor. The resistance indicated as R is the resistance of the lead, the resistance indicated as VR is the digital adjustable resistance set on the lead, and the voltage indicated as VDD is the DC voltage generated by the DC/DC converter;
在实际操作 i吋， 电流传感器将检测到的引线上的电流 I传送至电阻调节 模块， 电阻调节模块根据该电流相应调节该数字可调电阻 VR的电阻值， 从 而使得传送至有效显示区的直流驱动电压 VDDA不变； In actual operation, the current sensor transmits the current I on the detected lead to the resistance adjustment module, and the resistance adjustment module adjusts the resistance value of the digital adjustable resistor VR according to the current, And the DC driving voltage VDDA transmitted to the effective display area is unchanged;
VDD-VDDR+VDDA, 其中， VDDR为该引线上的电压降， 假设当引线 上的电流 I的电流值由 10变为 Ι0+ΔΙ时， 数字可调电阻 VR的电阻值由 R0 变为 R0+ R，则需调节 使得 ΙΟχ (R+ 0)变为（IO+Δΐ) 、人 ( R+RO+ZAR ) , 则 ΔΚ=- Δΐχ (R+RO) I (ΙΟ+Δϊ) , 这样才能保证 VDDA不变。  VDD-VDDR+VDDA, where VDDR is the voltage drop across the lead. Assuming that the current value of the current I on the lead changes from 10 to Ι0+ΔΙ, the resistance of the digitally adjustable resistor VR changes from R0 to R0+R. , you need to adjust so that ΙΟχ (R+ 0) becomes (IO+Δΐ), human (R+RO+ZAR), then ΔΚ=- Δΐχ (R+RO) I (ΙΟ+Δϊ), so that VDDA can be guaranteed. .
在实际操作时， 可以通过直接检测引线上的电流来获取引线上的电流， 也可以间接地通过显示面板的有效显示区内的亚像素的亮度或显示面板的温 度来间接获得引线上的电流。  In actual operation, the current on the lead can be obtained by directly detecting the current on the lead, or indirectly by the brightness of the sub-pixel in the effective display area of the display panel or the temperature of the display panel.
当直接获取引线上的电流时， 所述电流获取单元可以包括电流传感器或 设置于该引线上的电流感应电阻。  When the current on the lead is directly taken, the current acquisition unit may include a current sensor or a current sense resistor disposed on the lead.
当间接获取引线上的电流时， 所述电流获取单元可以包括：  When the current on the lead is indirectly obtained, the current acquisition unit may include:
像素亮度检测模块， 用于检测所述有效显示区内的所有亚像素的亮度； 电流获取模块， 用于根据该有效显示区内的所有亚像素的亮度得到所述 引线上的电流。  a pixel brightness detecting module, configured to detect brightness of all sub-pixels in the effective display area; and a current acquiring module configured to obtain current on the lead according to brightness of all sub-pixels in the effective display area.
所述电流获取单元还可以包括：  The current acquisition unit may further include:
温度检测模块， ）¾于检测所述显示面板的温度；  a temperature detecting module, wherein the temperature of the display panel is detected;
电流获取模块， 于根据该显示面板的温度得到该引线上的电流。  And a current acquisition module for obtaining a current on the lead according to a temperature of the display panel.
在间接获取引线上的电流时， 可以利 显示面板的有效显示区的图像内 容确定电流大小， 图像传输的信号都是数字信号， 组成一个像素的数据包括 8位的 R， G, B三个分量， 一般情况下" 11111111"代表最高亮度， "00000000" 代表最低亮度， 中间的数据则代表从 0到 255之间不同灰阶。 而显示图像所 需的电流也与像素的亮度之间有对应关系， 像素亮度高时显示图像所需的电 流大， 像素亮度低时显示图像所需的电流小， 所以可以统计有效显示区上显 示的图像的内容， 如果该图像中高亮度的像素多， 则必然显示所需的电流就 大， 低亮度的像素多， 则显示所需的电流小。 由于精确统计所消耗的时间及 成本过大， 可以采用估算法， 如统计亮度高于 127 灰阶的， 即数据大于 "10000000"的像素个数， 根据统计出的个数多少来间接获取引线上的电流。  When the current on the lead wire is indirectly obtained, the current content of the effective display area of the display panel can be determined, and the signals transmitted by the image are digital signals, and the data constituting one pixel includes 8 components of R, G, and B of 8 bits. In general, "11111111" represents the highest brightness, "00000000" represents the lowest brightness, and the middle data represents the different gray levels from 0 to 255. The current required to display the image also has a corresponding relationship with the brightness of the pixel. When the pixel brightness is high, the current required to display the image is large, and when the pixel brightness is low, the current required to display the image is small, so the display on the effective display area can be counted. The content of the image, if there are many pixels with high brightness in the image, it is inevitable that the current required for display is large, and if there are many pixels with low brightness, the current required for display is small. Since the time and cost of accurate statistics are too large, an estimation method can be used, such as counting the number of pixels whose luminance is higher than 127 gray scale, that is, the data is larger than "10000000", and indirectly obtaining the lead according to the number of statistics. Current.
当显示面板的有效显示区内的像素发光时， 会产生一定热量， 而发热量 的大小与像素消耗电流是成正比的， 如果可以监控面板的温度， 也可以较准 确地判断出面板消耗的电流大小。 因此可以在面板附近放置一枚或多枚温度 传感器，根据这些传感器测量出的温度大小获取显示面板消耗电流的大小（即 引线上的电流）， 再将该电流反馈给外部的直流电压产生单元， 以调整直流驱 动电压。 When the pixels in the effective display area of the display panel emit light, a certain amount of heat is generated, and the amount of heat generated is proportional to the pixel consumption current. If the temperature of the panel can be monitored, it can also be accurate. Determine the current consumed by the panel. Therefore, one or more temperature sensors can be placed near the panel, and the magnitude of the current consumption of the display panel (ie, the current on the lead wire) is obtained according to the temperature measured by the sensors, and the current is fed back to the external DC voltage generating unit. To adjust the DC drive voltage.
本公开实施例所述的直流驱动电压调节方法， 应用于上述的电压调节装 置， 所述直流驱动电压由直流电压产生单元通过设置于有效显示区外的引线 传送至有效显示区； 如图 3所示， 所述直流驱动电压调节方法包括：  The DC driving voltage adjusting method according to the embodiment of the present disclosure is applied to the voltage adjusting device, wherein the DC driving voltage is transmitted from the DC voltage generating unit to the effective display area through a lead disposed outside the effective display area; The DC driving voltage adjustment method includes:
电流获取步骤 31 : 电流获取单元实时获取该引线上的电流；  Current acquisition step 31: The current acquisition unit acquires the current on the lead in real time;
电压调节步骤 32: 电压调节单元根据该电流调节所述直流电压产生单元 产生的直流电压或调节该引线上的电 ffi， 以使得该直流驱动电压不变。  Voltage adjustment step 32: The voltage adjustment unit adjusts the DC voltage generated by the DC voltage generating unit according to the current or adjusts the electric power ffi on the lead wire so that the DC driving voltage does not change.
具体的， 所述电压调节步骤包括：  Specifically, the voltage adjustment step includes:
电压调节模块根据该电流产生电压控制信号；  The voltage regulation module generates a voltage control signal according to the current;
该直流电压产生单元根据该电压控制信号产生相应的直流电压， 以使得 所述直流驱动电压不变。  The DC voltage generating unit generates a corresponding DC voltage according to the voltage control signal such that the DC driving voltage does not change.
具体的， 所述电压调节步骤包括：  Specifically, the voltage adjustment step includes:
电阻调节模块根据该电流相应调节设置于该引线上的数字可调电阻的电 阻值， 以使得所述直流驱动电压不变。  The resistance adjusting module adjusts the resistance value of the digital adjustable resistor disposed on the lead according to the current, so that the DC driving voltage does not change.
具体的， 所述电流获取步骤包括：  Specifically, the current obtaining step includes:
像素亮度检测模块检测所述有效显示区内的所有亚像素的亮度； 电流获取模块根据该有效显示区内的所有亚像素的亮度得到所述引线上 的电流。  The pixel brightness detection module detects the brightness of all the sub-pixels in the effective display area; the current acquisition module obtains the current on the lead according to the brightness of all the sub-pixels in the effective display area.
具体的， 所述电流获取步骤包括：  Specifically, the current obtaining step includes:
温度检测模块检测所述显示面板的温度；  a temperature detecting module detects a temperature of the display panel;
电流获取模块根据该显示面板的温度得到该引线上的电流。  The current acquisition module obtains the current on the lead according to the temperature of the display panel.
本公开实施例所述的供电装置包括直流电压产生单元和上述的直流驱动 电压调节装置；  The power supply device according to the embodiment of the present disclosure includes a DC voltage generating unit and the DC driving voltage adjusting device described above;
所述直流电压产生单元， 用于产生直流电压， 并将该直流电压通过设置 于显示面板的有效显示区外的引线传送至有效显示区；  The DC voltage generating unit is configured to generate a DC voltage, and transmit the DC voltage to an effective display area through a lead disposed outside the effective display area of the display panel;
该直流电压减去该引线上的直流电压降为有效显示区的直流驱动电压； 所述直流驱动电压调节装置， ^于通过实时获取该引线上的电流， 并根 据该电流调节所述直流电压或调节该引线的电阻， 以使得该直流驱动电压不 变。 The DC voltage is subtracted from the DC voltage drop on the lead to the DC drive voltage of the effective display area; The DC driving voltage adjusting device is configured to obtain a current on the lead in real time, and adjust the DC voltage according to the current or adjust a resistance of the lead so that the DC driving voltage does not change.
本公开实施例所述的显示面板包括上述的供电装置。  The display panel of the embodiment of the present disclosure includes the above-described power supply device.
以上所述是本公开的可选实施方式， 应当指出， 对于本技术领域的普通 技术人员来说， 在不脱离本公开的主旨的前提下， 还可以作出若千改进和润 饰， 这些改进和润饰也应视为本公开的保护范围。  The above is an alternative embodiment of the present disclosure, and it should be noted that those skilled in the art can make improvements and retouchings without departing from the gist of the present disclosure. It should also be considered as the scope of protection of the present disclosure.

Claims

一种直流驱动电压调节装置， ^于调节显示面板的有效显示区的直流 驱动电压， 该直流驱动电压通过从直流电压产生单元所产生的直流电压中减 去设置于所述有效显示区外的引线上的直流电压降而得到， 所述直流驱动电 压调节装置包括： A DC driving voltage adjusting device for adjusting a DC driving voltage of an effective display area of a display panel, the DC driving voltage subtracting a lead disposed outside the effective display area by a DC voltage generated from a DC voltage generating unit The DC voltage drop is obtained, and the DC driving voltage adjusting device comprises:
电流获取单元， ffi于实时获取该引线上的电流；  The current acquisition unit, ffi, obtains the current on the lead in real time;
电压调节单元， 用于根据该电流调节所述直流电压产生单元产生的直流 电压或调节该引线的电阻， 以使得该直流驱动电压不变。  And a voltage adjusting unit, configured to adjust a DC voltage generated by the DC voltage generating unit according to the current or adjust a resistance of the lead wire so that the DC driving voltage does not change.
2、 如权利要求〗所述的直流驱动电压调节装置， 其中， 所述电压调节单 元包括：  2. The DC drive voltage regulator of claim 1, wherein the voltage adjustment unit comprises:
电压调节模块， 用于根据该电流产生电压控制信号， 并将该电压控制信 号传送至所述直流电压产生单元， 以控制该直流电压产生单元产生相应的直 流电压， 从而使得所述直流驱动电压不变。  a voltage adjustment module, configured to generate a voltage control signal according to the current, and transmit the voltage control signal to the DC voltage generating unit to control the DC voltage generating unit to generate a corresponding DC voltage, so that the DC driving voltage is not change.
3、 如权利要求 1所述直流驱动电压调节装置， 其中， 所述电压调节单元 包括：  3. The DC drive voltage regulator of claim 1, wherein the voltage adjustment unit comprises:
设置于该引线上的数字可调电阻；  a digital adjustable resistor disposed on the lead;
以及， 电阻调节模块， 用于根据该电流相应调节该数字可调电阻的电阻 值。  And a resistance adjustment module, configured to adjust a resistance value of the digital adjustable resistor according to the current.
4、如权利要求 1至 3中任一权利要求所述的直流驱动电压调节装置， 其 中， 所述电流获取单元包括电流传感器或设置于该引线上的电流感应电阻。  The direct current driving voltage adjusting device according to any one of claims 1 to 3, wherein the current acquiring unit comprises a current sensor or a current sensing resistor provided on the lead.
5、如权利要求 1至 3中任一权利要求所述的直流驱动电压调节装置， 其 中， 所述电流获取单元包括；  The DC drive voltage adjusting device according to any one of claims 1 to 3, wherein the current acquiring unit comprises:
像素亮度检测模块， 用于检测所述有效显示区内的所有亚像素的亮度； 电流获取模块， 用于根据该有效显示区内的所有亚像素的亮度得到所述 引线上的电流。  a pixel brightness detecting module, configured to detect brightness of all sub-pixels in the effective display area; and a current acquiring module configured to obtain current on the lead according to brightness of all sub-pixels in the effective display area.
6、如权利要求 1至 3中任一权利要求所述的直流驱动电压调节装置， 其 中， 所述电流获取单元包括：  The DC drive voltage adjusting device according to any one of claims 1 to 3, wherein the current acquiring unit comprises:
温度检测模块， ^于检测所述显示面板的温度； 电流获取模块， ffi于根据该显示面板的温度得到该引线上的电流。 a temperature detecting module, wherein the temperature of the display panel is detected; The current acquisition module, ffi, obtains the current on the lead according to the temperature of the display panel.
7、一种直流驱动电压调节方法， ffi于调节显示面板的有效显示区的直流 驱动电压， 所述直流驱动电压通过从直流电压产生单元所产生的直流电压中 减去设置于所述有效显示区外的引线上的直流电压降而得到， 所述直流驱动 电压调节方法包括：  7. A DC driving voltage adjusting method, wherein: ffi is used to adjust a DC driving voltage of an effective display area of a display panel, and the DC driving voltage is subtracted from a DC voltage generated by a DC voltage generating unit and disposed in the effective display area. The DC voltage drop on the outer lead is obtained, and the DC driving voltage adjusting method includes:
电流获取步骤： 实时获取该引线上的电流；  Current acquisition step: obtaining current on the lead in real time;
电压调节步骤： 根据该电流调节所述直流电压产生单元产生的直流电压 或调节该引线上的电 ffi， 以使得该直流驱动电压不变。  Voltage adjustment step: adjusting a DC voltage generated by the DC voltage generating unit according to the current or adjusting an electric power ffi on the lead wire so that the DC driving voltage does not change.
8、 如权利要求 7所述的直流驱动电压调节方法， 其中， 所述电压调节步 骤包括：  8. The DC drive voltage adjustment method according to claim 7, wherein the voltage adjustment step comprises:
根据该电流产生电压控制信号；  Generating a voltage control signal based on the current;
将该电压控制信号传送至所述直流电压产生单元， 控制该直流电压产生 单元产生相应的直流电压， 以使得所述直流驱动电压不变。  The voltage control signal is transmitted to the DC voltage generating unit, and the DC voltage generating unit is controlled to generate a corresponding DC voltage so that the DC driving voltage does not change.
9、 如权利要求 7所述的直流驱动电压调节方法， 其中， 所述电压调节歩 骤包括：  The DC driving voltage adjusting method according to claim 7, wherein the voltage adjusting step comprises:
根据该电流相应调节设置于该引线上的数字可调电阻的电阻值， 以使得 所述直流驱动电压不变。  The resistance value of the digitally adjustable resistor disposed on the lead is adjusted correspondingly according to the current so that the DC driving voltage does not change.
10、 如权利要求 7至 9中任一权利要求所述的直流驱动电压调节方法， 其中， 所述电流获取步骤包括：  The DC drive voltage adjustment method according to any one of claims 7 to 9, wherein the current acquisition step comprises:
检测所述有效显示区内的所有亚像素的亮度；  Detecting brightness of all sub-pixels in the effective display area;
根据该有效显示区内的所有亚像素的亮度得到所述引线上的电流。  The current on the lead is obtained based on the brightness of all sub-pixels in the active display area.
1 如权利要求 7至 9中任一权利要求所述的直流驱动电压调节方法， 其中， 所述电流获取步骤包括：  The DC drive voltage adjustment method according to any one of claims 7 to 9, wherein the current acquisition step comprises:
检测所述显示面板的温度；  Detecting a temperature of the display panel;
根据该显示面板的温度得到该引线上的电流。  The current on the lead is obtained based on the temperature of the display panel.
12 , 一种供电装置， 包括直流电压产生单元和权利要求 1至 6中任一权 利要求所述的直流驱动电压调节装置；  12 . A power supply device comprising a DC voltage generating unit and the DC driving voltage adjusting device according to any one of claims 1 to 6;
所述直流电压产生单元产生直流电压， 并将该直流电压通过设置于显示 面板的有效显示区外的引线传送至有效显示区； 该直流电压 ^ 2ί !· 1 — ί直流电压降为有效显示区的直流驱动电压 13、 一种显示面板， 包 要求 12所述的供电装置。 The DC voltage generating unit generates a DC voltage, and transmits the DC voltage to an effective display area through a lead disposed outside the effective display area of the display panel; The DC voltage ^ 2ί !· 1 - ί DC voltage drop is the DC drive voltage 13 of the effective display area, a display panel, and the power supply device of the package requirement 12.
PCT/CN2014/085864 2014-06-04 2014-09-03 Direct current driving voltage regulation device and method, power supply device, and display panel WO2015184694A1 (en)

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